In a telephone conversation, Lavrov stressed the importance of preventing a return to armed confrontation and reiterated that the conflict has no military solution, according to the ministry’s statement.

The call followed recent talks between the United States and Iran in Pakistan, which ended without agreement. Araqchi briefed Lavrov on the discussions, the ministry said, providing details of negotiations that failed to produce a settlement.

Russia has positioned itself as a potential mediator in the conflict, signaling willingness to engage diplomatically as tensions remain high despite a temporary ceasefire and ongoing international efforts to restart negotiations.

Araqchi said negotiations in Islamabad had been conducted in good faith but were undermined by what he described as “maximalism” and shifting U.S. demands, adding that the talks came close to producing an agreement before breaking down.

The remarks followed an announcement by Donald Trump that U.S. naval forces would begin blockading vessels entering or leaving Iranian ports, a move that risks destabilizing a fragile ceasefire reached after weeks of conflict.

US Central Command said the blockade would take effect at 10 a.m. ET (1400 GMT) and would apply to all maritime traffic linked to Iranian ports across the Arabian Gulf and Gulf of Oman, while maintaining freedom of navigation through the Strait of Hormuz for vessels not bound for Iran.

Trump said the United States would act against ships paying what he described as “illegal tolls” to Iran and warned that any attack on U.S. or commercial vessels would trigger a strong military response.

Iran’s Islamic Revolutionary Guard Corps said any approach by foreign military vessels to the strait would be treated as a violation of the ceasefire and met with a “decisive” response.

Parliamentary Speaker Mohammad Baqer Qalibaf dismissed the U.S. position, saying Tehran would respond in kind. “If you fight, we will fight, and if you come forward with logic, we will deal with logic,” he said, according to state media.

The talks in Islamabad marked the first direct engagement between the United States and Iran in more than a decade and followed a ceasefire announced earlier in the week after six weeks of conflict that has disrupted global energy markets and pushed oil prices above $100 per barrel.

JD Vance, who led the U.S. delegation, said no agreement had been reached, while signaling that diplomacy could continue. Trump also described the talks as “very friendly” and expressed confidence that Iran might return to negotiations.

A U.S. official said key sticking points included demands for Iran to halt uranium enrichment, dismantle enrichment facilities, transfer highly enriched material and end support for regional groups, alongside ensuring open access to the strait.

Iranian officials, including President Masoud Pezeshkian, said Tehran remained open to a “balanced and fair agreement,” blaming Washington for the breakdown and urging a return to international legal frameworks.

Shipping data showed that three fully laden supertankers transited the strait on Saturday, suggesting that maritime flows had not yet been fully disrupted despite the looming blockade.

Speaking on a Fuji TV programme, Motegi said such a move would be contingent on a “complete ceasefire” and the presence of naval mines obstructing navigation. He described the scenario as hypothetical, adding that minesweeping could be considered if maritime protection conditions required it.

Japan’s ability to deploy forces overseas is restricted by its postwar pacifist constitution, though security legislation enacted in 2015 allows the use of the Self-Defense Forces if an attack on a close partner threatens Japan’s survival and no alternative measures are available.

Motegi said Tokyo has no immediate plans to negotiate specific arrangements for stranded Japanese vessels to transit the waterway, stressing instead the importance of restoring conditions that allow safe passage for all ships.

Japan relies on the Strait of Hormuz for roughly 90% of its oil imports, underscoring the strategic importance of the route. The strait has been largely closed by Iran during the ongoing conflict, now in its fourth week, contributing to a surge in global oil prices.

The disruption has prompted Japan and other countries to release oil from strategic reserves to stabilise supply.

Iranian Foreign Minister Abbas Araqchi said on Friday he had discussed with Motegi the possibility of allowing Japanese-linked vessels to pass through the strait, according to Japan’s Kyodo news agency.

Meanwhile, U.S. President Donald Trump met Japanese Prime Minister Sanae Takaichi in Washington on Thursday and urged Japan to increase its role in efforts to reopen the waterway. Takaichi said she briefed Trump on the scope of support Japan could provide under its legal framework.

Araqchi made the remarks during separate phone calls with his counterparts in Turkey, Egypt and Pakistan, where he stressed the need for a unified regional approach to counter rising tensions.

He said the recent actions by Washington and Tel Aviv were aimed at escalating instability and undermining regional security.

In the reported conversations, Araqchi emphasised that cooperation among neighbouring states was essential to prevent further deterioration in the security environment. Iranian state media cited him as warning that unchecked escalation could have broader implications for regional stability.

The outreach reflects Tehran’s effort to consolidate diplomatic backing among key regional actors at a time of heightened geopolitical strain.

Araqchi said that recent U.S. and Israeli actions had targeted Iranian infrastructure, characterising them as deliberate attempts to provoke confrontation. He did not specify the nature or extent of the damage in the statements carried by state media.There has been no immediate response from U.S. or Israeli officials to the claims.

Iran would continue to defend its sovereignty and security with all available means, Araqchi said, according to the report, signalling Tehran’s readiness to respond to what it views as external threats.

The remarks come amid ongoing tensions in the Middle East, where rivalries involving Iran, the United States and Israel have periodically intensified, raising concerns about broader regional fallout.